Haze or haze means dust or vapor causing a mist or fog, literally or figuratively--
There's a haze in the lobby, but I don't smell smoke.
He's in a haze; he was out late last night.
Hays or hays ( rhymes with haze ) is the third person singular ( he, she, it ) form of "hay", meaning to cut and store dried grass for animal fodder--
The farmer hays here in the end of July.
He usually hays enough to feed his cows all year.
Now that you know that, you can say--
"When he hays this field, there is a haze from here to the road."
Note-- "hay's" ( rhymes with haze ) may be a contraction ( short, informal form ) of "hay is", meaning the dried cut grass [ is ]--
The hay's almost gone; we'll have to buy some.
"Hay's" may also be the possessive ( belonging to ) form of "hay", meaning dried cut grass--
He enjoys the hay's scent; he doesn't mind mowing.
